摘要
电缆电视始创于20世纪的40年代,经过半个世纪的发展,其技术日臻完善与成熟。本文介绍了目前世界一些发达用家电缆电视的发展概况。论述了其发展特点及趋势。
Cable TV was invented in 1940s. Through half a century's development . its technology has been improving and mature. This article introduces the development of CATV in some advanced countries, and expounds us development teature and future trends.
